Wireless acoustic box



FIG. 1 is a perspective view of the wireless acoustic box of my design viewed from the top, and left front corner, showing the top, front and left side;

FIG. 2 is a perspective view thereof viewed from the bottom front, showing the front;

FIG. 3 is a perspective view thereof viewed from the top front, showing the front and top;

FIG. 4 is a perspective view thereof viewed from a top rear corner, showing the rear and right side;

FIG. 5 is a perspective view thereof viewed from the top, and right front corner, showing the front, top and right side;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for wireless acoustic box, as shown and described. 